<template>
  <div
    class="list"
    ref="wrapper"
  >
    <div>
      <div class="area">
        <div class="title border-topbottom">当前城市</div>
        <div class="buttom-list">
          <div
            class="buttom-wrapper"
          >
            <div class="buttom">{{this.$store.state.city}}</div>
          </div>
        </div>
      </div>
      <div class="area">
        <div class="title border-topbottom">热门城市</div>
        <div class="buttom-list">
          <div
            class="buttom-wrapper"
            v-for="item of hot"
            :key="item.id"
            @click="handleCityClick(item.name)"
          >
            <div class="buttom">{{item.name}}</div>
          </div>
        </div>
      </div>
      <div
        class="area"
        v-for="(item,key) of cities"
        :key="key"
        :ref="key"
      >
        <div class="title">{{key}}</div>
        <div class="item-list">
          <div
            class="item border-bottom"
            v-for="innerItem of item"
            :key="innerItem.id"
            @click="handleCityClick(innerItem.name)"
          >{{innerItem.name}}</div>
        </div>
      </div>
    </div>
  </div>
</template>
<script>
import Bscroll from 'better-scroll'
export default {
  name: 'cityList',
  props: {
    hot: Array,
    cities: Object,
    letter: String
  },

  methods: {
    handleCityClick(city) {
       this.$store.commit('changeCity',city)
       this.$router.push('/')
    }
  },
  watch: {
    letter() {
      if (this.letter) {
        const element = this.$refs[this.letter][0]
        this.scroll.scrollToElement(element)
      }
    }
  },
  mounted() {
    this.scroll = new Bscroll(this.$refs.wrapper)
  }
}
</script>

<style lang="stylus" scoped>
.border-topbottom {
  &:before {
    border-color: #ccc;
  }

  &:after {
    border-color: #ccc;
  }
}

.border-bottom {
  &:before {
    border-color: #ccc;
  }
}

.list {
  position: absolute;
  top: 1.66rem;
  left: 0;
  bottom: 0;
  right: 0;
  overflow: hidden;

  .title {
    line-height: 0.44rem;
    background: #eee;
    padding: left 0.2rem;
    color: #666;
    font-size: 0.26rem;
  }

  .buttom-list {
    padding: 0.1rem 0.6rem 0.1rem 0.1rem;
    overflow: hidden;

    .buttom-wrapper {
      float: left;
      width: 33.33%;

      .buttom {
        margin: 0.1rem;
        text-align: center;
        padding: 0.1rem 0;
        border: 0.02rem solid #ccc;
        border-radius: 0.06rem;
      }
    }
  }

  .item-list {
    .item {
      line-height: 0.76rem;
      color: #666;
      padding-left: 0.2rem;
    }
  }
}
</style>
